3. Bewildering on account of rapid turning; running round with celerity; gyratory; whirling. The giddy motion of the whirling mill. Pope.

4. Characterized by inconstancy; unstable; changeable; fickle; wild; thoughtless; heedless. "Giddy, foolish hours." Rowe. "Giddy chance." Dryden. Young heads are giddy and young hearts are warm. Cowper.

GIDDY
Gid"dy, v. i.

Defn: To reel; to whirl. Chapman.

GIDDY
Gid"dy, v. t.

Defn: To make dizzy or unsteady. [Obs.]

GIDDY-HEAD
Gid"dy-head`, n.

Defn: A person without thought fulness, prudence, or judgment.
[Colloq.] Burton.

GIDDY-HEADED
Gid"dy-head`ed, a.

Defn: Thoughtless; unsteady.